BindingContext - Combobox issue

[Chris Richner]

Introduction

I've got a combobox on my form which is bound to a complex data source (IList).

myCombobox.DataSource = myList;
myCombobox.DisplayMember = "LastName";
myCombobox.ValueMember = "person_id";

The combobox itself is bound to a business object

myCombobox.DataBindings.Add("SelectedValue", myBusinessObjectInstance, "person_id");

So far so good. My combobox is filled with the provided Items and when I select an item inside the combobox the value get's updated in my myBusinessObjectInstance as expected.

Problem

As far as I understand the BindingContext class it holds all bindings (controls) bound to the same data source instance, in my case myBusinessObjectInstance. But when I ask the form for the BindingContext attached to myBusinessObjectInstance the combobox binding is missing. What do I miss? myMsg.BehindDaKeys = "Jerry Maguire";